Remove code from the deprecated GenericBinaryOpStub.

src/arm/code-stubs-arm.h

Index: src/arm/code-stubs-arm.h
===================================================================
--- src/arm/code-stubs-arm.h	(revision 7552)
+++ src/arm/code-stubs-arm.h	(working copy)
@@ -71,162 +71,6 @@
 };
 
 
-class GenericBinaryOpStub : public CodeStub {
- public:
-  static const int kUnknownIntValue = -1;
-
-  GenericBinaryOpStub(Token::Value op,
-                      OverwriteMode mode,
-                      Register lhs,
-                      Register rhs,
-                      int constant_rhs = kUnknownIntValue)
-      : op_(op),
-        mode_(mode),
-        lhs_(lhs),
-        rhs_(rhs),
-        constant_rhs_(constant_rhs),
-        specialized_on_rhs_(RhsIsOneWeWantToOptimizeFor(op, constant_rhs)),
-        runtime_operands_type_(BinaryOpIC::UNINIT_OR_SMI),
-        name_(NULL) { }
-
-  GenericBinaryOpStub(int key, BinaryOpIC::TypeInfo type_info)
-      : op_(OpBits::decode(key)),
-        mode_(ModeBits::decode(key)),
-        lhs_(LhsRegister(RegisterBits::decode(key))),
-        rhs_(RhsRegister(RegisterBits::decode(key))),
-        constant_rhs_(KnownBitsForMinorKey(KnownIntBits::decode(key))),
-        specialized_on_rhs_(RhsIsOneWeWantToOptimizeFor(op_, constant_rhs_)),
-        runtime_operands_type_(type_info),
-        name_(NULL) { }
-
- private:
-  Token::Value op_;
-  OverwriteMode mode_;
-  Register lhs_;
-  Register rhs_;
-  int constant_rhs_;
-  bool specialized_on_rhs_;
-  BinaryOpIC::TypeInfo runtime_operands_type_;
-  char* name_;
-
-  static const int kMaxKnownRhs = 0x40000000;
-  static const int kKnownRhsKeyBits = 6;
-
-  // Minor key encoding in 17 bits.
-  class ModeBits: public BitField<OverwriteMode, 0, 2> {};
-  class OpBits: public BitField<Token::Value, 2, 6> {};
-  class TypeInfoBits: public BitField<int, 8, 3> {};
-  class RegisterBits: public BitField<bool, 11, 1> {};
-  class KnownIntBits: public BitField<int, 12, kKnownRhsKeyBits> {};
-
-  Major MajorKey() { return GenericBinaryOp; }
-  int MinorKey() {
-    ASSERT((lhs_.is(r0) && rhs_.is(r1)) ||
-           (lhs_.is(r1) && rhs_.is(r0)));
-    // Encode the parameters in a unique 18 bit value.
-    return OpBits::encode(op_)
-           | ModeBits::encode(mode_)
-           | KnownIntBits::encode(MinorKeyForKnownInt())
-           | TypeInfoBits::encode(runtime_operands_type_)
-           | RegisterBits::encode(lhs_.is(r0));
-  }
-
-  void Generate(MacroAssembler* masm);
-  void HandleNonSmiBitwiseOp(MacroAssembler* masm,
-                             Register lhs,
-                             Register rhs);
-  void HandleBinaryOpSlowCases(MacroAssembler* masm,
-                               Label* not_smi,
-                               Register lhs,
-                               Register rhs,
-                               const Builtins::JavaScript& builtin);
-  void GenerateTypeTransition(MacroAssembler* masm);
-
-  static bool RhsIsOneWeWantToOptimizeFor(Token::Value op, int constant_rhs) {
-    if (constant_rhs == kUnknownIntValue) return false;
-    if (op == Token::DIV) return constant_rhs >= 2 && constant_rhs <= 3;
-    if (op == Token::MOD) {
-      if (constant_rhs <= 1) return false;
-      if (constant_rhs <= 10) return true;
-      if (constant_rhs <= kMaxKnownRhs && IsPowerOf2(constant_rhs)) return true;
-      return false;
-    }
-    return false;
-  }
-
-  int MinorKeyForKnownInt() {
-    if (!specialized_on_rhs_) return 0;
-    if (constant_rhs_ <= 10) return constant_rhs_ + 1;
-    ASSERT(IsPowerOf2(constant_rhs_));
-    int key = 12;
-    int d = constant_rhs_;
-    while ((d & 1) == 0) {
-      key++;
-      d >>= 1;
-    }
-    ASSERT(key >= 0 && key < (1 << kKnownRhsKeyBits));
-    return key;
-  }
-
-  int KnownBitsForMinorKey(int key) {
-    if (!key) return 0;
-    if (key <= 11) return key - 1;
-    int d = 1;
-    while (key != 12) {
-      key--;
-      d <<= 1;
-    }
-    return d;
-  }
-
-  Register LhsRegister(bool lhs_is_r0) {
-    return lhs_is_r0 ? r0 : r1;
-  }
-
-  Register RhsRegister(bool lhs_is_r0) {
-    return lhs_is_r0 ? r1 : r0;
-  }
-
-  bool HasSmiSmiFastPath() {
-    return op_ != Token::DIV;
-  }
-
-  bool ShouldGenerateSmiCode() {
-    return ((op_ != Token::DIV && op_ != Token::MOD) || specialized_on_rhs_) &&
-        runtime_operands_type_ != BinaryOpIC::HEAP_NUMBERS &&
-        runtime_operands_type_ != BinaryOpIC::STRINGS;
-  }
-
-  bool ShouldGenerateFPCode() {
-    return runtime_operands_type_ != BinaryOpIC::STRINGS;
-  }
-
-  virtual int GetCodeKind() { return Code::BINARY_OP_IC; }
-
-  virtual InlineCacheState GetICState() {
-    return BinaryOpIC::ToState(runtime_operands_type_);
-  }
-
-  const char* GetName();
-
-  virtual void FinishCode(Code* code) {
-    code->set_binary_op_type(runtime_operands_type_);
-  }
-
-#ifdef DEBUG
-  void Print() {
-    if (!specialized_on_rhs_) {
-      PrintF("GenericBinaryOpStub (%s)\n", Token::String(op_));
-    } else {
-      PrintF("GenericBinaryOpStub (%s by %d)\n",
-             Token::String(op_),
-             constant_rhs_);
-    }
-  }
-#endif
-};
-
-
 class TypeRecordingBinaryOpStub: public CodeStub {
  public:
   TypeRecordingBinaryOpStub(Token::Value op, OverwriteMode mode)
@@ -413,102 +257,6 @@
 };
 
 
-// This stub can do a fast mod operation without using fp.
-// It is tail called from the GenericBinaryOpStub and it always
-// returns an answer.  It never causes GC so it doesn't need a real frame.
-//
-// The inputs are always positive Smis.  This is never called
-// where the denominator is a power of 2.  We handle that separately.
-//
-// If we consider the denominator as an odd number multiplied by a power of 2,
-// then:
-// * The exponent (power of 2) is in the shift_distance register.
-// * The odd number is in the odd_number register.  It is always in the range
-//   of 3 to 25.
-// * The bits from the numerator that are to be copied to the answer (there are
-//   shift_distance of them) are in the mask_bits register.
-// * The other bits of the numerator have been shifted down and are in the lhs
-//   register.
-class IntegerModStub : public CodeStub {
- public:
-  IntegerModStub(Register result,
-                 Register shift_distance,
-                 Register odd_number,
-                 Register mask_bits,
-                 Register lhs,
-                 Register scratch)
-      : result_(result),
-        shift_distance_(shift_distance),
-        odd_number_(odd_number),
-        mask_bits_(mask_bits),
-        lhs_(lhs),
-        scratch_(scratch) {
-    // We don't code these in the minor key, so they should always be the same.
-    // We don't really want to fix that since this stub is rather large and we
-    // don't want many copies of it.
-    ASSERT(shift_distance_.is(r9));
-    ASSERT(odd_number_.is(r4));
-    ASSERT(mask_bits_.is(r3));
-    ASSERT(scratch_.is(r5));
-  }
-
- private:
-  Register result_;
-  Register shift_distance_;
-  Register odd_number_;
-  Register mask_bits_;
-  Register lhs_;
-  Register scratch_;
-
-  // Minor key encoding in 16 bits.
-  class ResultRegisterBits: public BitField<int, 0, 4> {};
-  class LhsRegisterBits: public BitField<int, 4, 4> {};
-
-  Major MajorKey() { return IntegerMod; }
-  int MinorKey() {
-    // Encode the parameters in a unique 16 bit value.
-    return ResultRegisterBits::encode(result_.code())
-           | LhsRegisterBits::encode(lhs_.code());
-  }
-
-  void Generate(MacroAssembler* masm);
-
-  const char* GetName() { return "IntegerModStub"; }
-
-  // Utility functions.
-  void DigitSum(MacroAssembler* masm,
-                Register lhs,
-                int mask,
-                int shift,
-                Label* entry);
-  void DigitSum(MacroAssembler* masm,
-                Register lhs,
-                Register scratch,
-                int mask,
-                int shift1,
-                int shift2,
-                Label* entry);
-  void ModGetInRangeBySubtraction(MacroAssembler* masm,
-                                  Register lhs,
-                                  int shift,
-                                  int rhs);
-  void ModReduce(MacroAssembler* masm,
-                 Register lhs,
-                 int max,
-                 int denominator);
-  void ModAnswer(MacroAssembler* masm,
-                 Register result,
-                 Register shift_distance,
-                 Register mask_bits,
-                 Register sum_of_digits);
-
-
-#ifdef DEBUG
-  void Print() { PrintF("IntegerModStub\n"); }
-#endif
-};
-
-
 // This stub can convert a signed int32 to a heap number (double).  It does
 // not work for int32s that are in Smi range!  No GC occurs during this stub
 // so you don't have to set up the frame.